Motor-cycle.



l. J. CHAPN.

- MOTOR CYCLE. APPgxcATloN man Ample, 1913.

v Lm, Mmm/@ 5m n., 1916.

l 2 snssfsme z.

' To all miam iz" 'mayv @omer-m.:

(resiliently supporting gbhe Be it known that l1, ier-rrr Cissrirr, e crimen of the Tilriied Seites of Amerie@ residing et Detroit, iii the eomisy of Wayne and Siete of Michigan, lieve invented eertein 'newencl useoi improvements in Mo tor-Cycles, of which the 'following is e. specification, reference being iisd. loerein to the accompanying drawings.

The invention relaes to motorcycles, and has `more particular reference Vo the oonstruotion of the frame emi the means' for seme upon the driving and steering wheels.

The invention urtherreleizes ie various features of construction es more fully here inafer set forth and claimefl.

ln the drawings: Figure l is a siffle ele vaiion of the maohineiliig. 2 is e plan view thereof; Fig. 3 is a cross section in the plane of one ofthe axles; Fig. 1i is e horizontal. section; and Fig. 5 is e perspective View.

A is the driving Wheel emi B be steer mg Wheel arranged in the usuel tseciem re-A lation. C 1s e frame resiliently supporieel upon seid wheels through the medium of Suitable springs, but held in 'suoli reietios as to neither interfere 'Wiili the driving oi" steering mechanism. Speoiioellfyv, the frame C preferably comprises tially parallel side sills horizontal portion connected by cross sills D, and upon which is mounted the engine E, transmission gearing F, seat G, ss 'Well es other pez-ts of the mechanism. it opposie ends of this central portion of the freine are upWerdly-loeili.` end portions C and U, Which respectively embrace the forward and rear Wheels. i

The forward portions C of the freine, as shown in plank/ieu', are laterally deiiected to provide clearance for the turning of ihe steeilng wheel and' beyond lie point of cleeetion converge. At ilieir ends they are eonnecied to s yoke frame H which passes over ilie Wheel, providing sufficient eleerence for veriieel oscillation iliereor. The upper eed. of the 'Voire frame is braced by e.

roo 'i which 'exeeiis rearward wel flownwerci in iselirie e pair of subsieii! direetioii is 'the cross.

msw- .arman 'veriieel oseiilfiiiois of iiie the ime hold eli-em in the eeniral pleno fresse, each Wheel is mounfefl iii :i forli, which et its lower emi is connectedy is fthe iframe lo? radius rods, and ei. its upper er1-.fi iles slidm sible searing in Lelle yoke. The radius rods i.: for tiieorworri or steering wheel are conf nested to e. szatioiiery erle M, 'with 'passes through e hollow 'oiirnel bearing M for the hollow "hub M2, 'imei is pif/obesi ico ille former by a .feriieal pin M3. The `fori; N for ibis forward wheel is secured 'i0 opposite @nels the bearing :mei by Fesses of he siem-ence provifle freine :l io provide. f

@Q2 are ietereliy iieiieeie f. l erases ille vf'iieel and iie melius rofis eimiierly lient. Thus zlie Wheel, While ree io be hurried by lie steern ing mechanism, ne'vershelss sii'ongly ecm- :oeeieol te the frame, esci eiso is free so oseilla'be if'eriicaiiy.

The :Emme is resiliently' suppored on both e?? wheels. This is eecomplislled oyspriiigs G for forward "Wheel, which fire sleeved 'upon vertical sinds Uf connected 'ko ilie radius rods L, and which psss ichrougli slotted bearings in @the ends of the frame member C2. The rear Wheel is supported open springs P, preferably o :full elliptic form, the upper member being eteclied to the portion C of the frame. Te lower members of r1ibliese springs are attached to radius rofls QJ, one of which formsu e lions ing for iie fli'ive shaft Q and the bevel gearing for driving the roer Wheel. The simil; Q', fiier passing' out through the end of the radius roel, is Coupied by o. universel housing for lie transmission gearing, and

eoupiiiog R isis transverse alinemeni;

by seis-l hollow with the pivotal point of the radius rod Q, s0 that the oscillation of the wheel will not interfere with the driving thereof.

For steering the forward. Wheel, a handlebar S is suitably mounted on'the frame and connected to the fork N. I preferably arrange the steering,r stein S in rear of the forward 'Wheel and mount it in a detachable frame S2, which is secured to the brace rod I. The lower end ofthe steni S is stepped in a bearing S3, from which it may be vertically disengaged when the 'frame Sis detached.

S1c are laterally and downwardly inclined brace rods for connecting the frame S2 with. the side sills C and holding the steering stein in position.

S5 is a rod or other operating connection between the steering stern and the forli N for transmitting an angular movement of one to the other. Thus by detaching the frame S2, which is secured by a bolt Se, and by also detacliing the lower ends of the brace rods S4 and the rod S5, the steering,- stein and handle-bar may be removed.

The engine employed on iny motorcycle is preferably of a Watencooled type, which requires a radiatorfor dissipating the heat. To avoid injury to this radiator, it is so designed and arranged in relation to the frame as to be protected even Where 'the inachine is lying upon its side. its shown, the radiator T is placed in front of theengine and just in rear oi the steering stein, being mounted upon theliorizontal portion .of the frame. ln this position, the laterally-de- Hected portions of 'the frame, together with the yoke portions H and J, form a shield or guard projecting outvvardbeyond the boundaries of the radiator.

U are foot boards secured upon opposite sides of the frame, their forward ends prefera-bly extending "to tlielaterally deflected portions C2. y

W is a stand for holding the machine in upright position, and which is in the form of a bail pivoted to the side sills C, and provided with a spring W 'for normally hold ing it retracted.e When this bail is' depressed and turned beyond the vertical, it will form a stable support for the wheel. in starting, it is not necessary to disengage the stand first, for thereason that the frame isresiliently supported upon the Wheels, and consequently the lifting movement of the stand in paing over ,the center will not raise the drive Wheel 0E the ground. Another fea- .ture in the construction of the .stand is that itis positioned near the center of gravity,

and. therefore if either the front or rear wheel is removed, the stand will stably supl*port the rcniaining portion oi the machine.'

'I n repairing the' machine, it is fre ently desirable yto remove the driving Wheil. My

memorie construction provides for this Without the necessity of disniounting the frame, and to this end the housing for the gearing Q2 is and downward withdrawal of the Wheel;

from the frame without'- disturbing either the drive mechanism on tlie :trame or detacli'ing the members of the trame itself.

What claim as my invention is: 4l. A motorcycle, comprising driving and steering Wheels, a. rigid frame embracing Une section A said Wheels and providing clearance for the turning of the latter, resilient vertically yieldable supports for said frame upon said Wheels, radius rods for connecting said .Wheels with said frame, and driving mechanisni mounted on said frame operatively connected with said driving wheel in diiierent positions of adjustment thereof.

2. ln a motorcycle, the combination with the driving Wheel, of a frame bifurcated to embrace said wheel and resiliently, yieldn ably supported thereon, a motor mounted on said frame, transmission connection 'between said motor and drive Wheel, a plurality of' independent radius rods pivotally connecting' said drive Wheel "with 'said frame, and a universal pivotal coupling in said transroissionsinned with the pivotY axis of said radius rod.

ico

3. 'n a motorcycle, the combination with' a drive Wheel. of a. :frame having side sills embracing'sai drive wheel, radius rods connecting said Wheel to said frame,- inter-meshing bevel gears for driving said wheel, and

a. housing for said gears mounted upon one! 'of said radius rods, and having a detachable section permitting the rearward removal of` said wheel.

d. nl'n a. motorcycle,the combination withl a drive wheel, cito frame having side sills iio embracing said drive wheel, a. motor and l transmission gearing mounted on said frame, radius rods upon yopposite sides of the drive wheel pivotolly connecting said drive wheel with seidffrme, intermesliing gears liousedwithin one .of said radius rods Y for driving said drive Wheel; and-a drive l shaft extending vthrough' .said last men- Ationed radius 'Qd `for connecting one or said gearswitn ie transmission gearing,

said drive shatfhaving a. universal coupling therein in substantial transverse al'neinent with the pivotal points of the radius, rods.

in. e motorcycle, the combination with a, drive wheel, ott fa frame having side sills embmengseid drive Wheel, e yoke, a spring eonneeted to one of said sills, a tubular radius rod securing said drive wheel to said frame, intermeshing gears for driving said Wheel, a housing for said gears upon said radius rod formed in sections, one of said sections forming a support for said yoke, and a. bearing for attachment withl said spring, the complementary section being de'- taehable to permit the rearward and down-` 'w JOHN J. CHAPN.

Witnesses:

FRANK R. DIETZ, WM. J. BELKNAP. 

